/*
 * Copyright (C) 2016 Alexey Verein
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.antonioleiva.bandhookkotlin.repository

import com.antonioleiva.bandhookkotlin.domain.repository.AlbumRepository
import com.antonioleiva.bandhookkotlin.repository.dataset.AlbumDataSet

class AlbumRepositoryImpl(private val albumDataSets: List<AlbumDataSet>) : AlbumRepository {

    override fun getAlbum(id: String) = albumDataSets
            .map { it.requestAlbum(id) }
            .firstOrNull { it != null }

    override fun getTopAlbums(artistId: String?, artistName: String?) = albumDataSets
                .map { it.requestTopAlbums(artistId, artistName) }
                .firstOrNull { it.isNotEmpty() }
                ?: emptyList()
}